International Journal of
Medicine and Medical Sciences

  • Abbreviation: Int. J. Med. Med. Sci.
  • Language: English
  • ISSN: 2006-9723
  • DOI: 10.5897/IJMMS
  • Start Year: 2009
  • Published Articles: 535

Full Length Research Paper

Antibiotics sensitivity patterns of Escherichia coli and Aerobacter aerogenes isolated from well water in Ile–Ife, Nigeria

Adekunle Odunayo Adejuwon
  • Adekunle Odunayo Adejuwon
  • Department of Biochemistry and Microbiology, Faculty of Information Technology and Applied Sciences, Lead City University, Ibadan, Oyo State, Nigeria. Department of Microbiology, Obafemi Awolowo University, Ile-Ife, Oyo State, Nigeria.
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Mary Adejumoke Bisi-Johnson
  • Mary Adejumoke Bisi-Johnson
  • Department of Microbiology, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria.
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Oyinade Aina Agboola
  • Oyinade Aina Agboola
  • Department of Physical and Health Education, Adeyemi College of Education, Obafemi Awolowo University, Ondo State, Nigeria.
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Bridget Oluwatoyin Fadeyi
  • Bridget Oluwatoyin Fadeyi
  • Department of Nursing, Faculty of Information Technology and Applied Sciences, Lead City University, Ibadan, Nigeria.
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Adebanke Oluwatosin Adejuwon
  • Adebanke Oluwatosin Adejuwon
  • Department of Human Nutrition, College of Medicine, University of Ibadan, Ibadan, Oyo
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  •  Accepted: 17 March 2011
  •  Published: 30 May 2011



Ten wells were arbitrarily chosen for study in Sabo area in Ile-Ife, Nigeria. The water samples were collected to estimate the extent of faecal pollution and the probable health hazard the use of these well waters can impound on the community. Coliform count was determined using the Most Probable Number (MPN) Technique. The indicator organisms in this study were Escherichia coli and Aerobacter aerogenes. Samples of water obtained from the wells were considered unsafe for human consumption, especially when used untreated, because they contain a high density of coliforms. Various morphological, cultural characteristics and biochemical tests were also carried out on the indicator organisms. E. coli was sensitive to cotrimoxazole, streptomycin, tetracycline, colistin, gentamicine and nalidixic acid but resistant to nitrofurantoin, ampicillin, cephalocidine, sulphafurazole, carbenicillin and sulfamethazole whileAerobacter aerogenes was sensitive to colistin, gentamicine and nitrofurontoin but resistant to the remaining antibiotics of the Gram negative disc. For the U4-disc,Escherichia coli was susceptible to colistin sulphate but resistant to all the other antibiotics. Aerobacter aerogenes was resistant to all the U4 antibiotics discs. It is recommended that a major programme which will intimate rural and urban dwellers of the sources, risk and consequences of water pollution and water-borne diseases should be carried out in the near future.


Key words: Antibiotics sensitivity patterns, Escherichia coliAerobacter aerogenes, well water